
package kr.hkit.powerjava.chapter24.work2.dao;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

import kr.hkit.powerjava.chapter24.work2.vo.Department;

public class DepartmentDao implements InterfaceDao<Department> {

	ArrayList<Department> lists;
	private static final String FILE_NAME = "departmentList.data";
	
	@Override
	public void insertItem(Department item) {
		if (!lists.contains(item)) {
			lists.add(item);
		} else {
			System.out.println("중복된 데이터");
		}
	}

	@Override
	public void deleteItem(Department item) {
		lists.remove(item);	
	}

	@Override
	public void updateItem(Department item) {
		lists.set(lists.indexOf(item), item);
	}

	@Override
	public Department searchItem(Department item) {
		return lists.get(lists.indexOf(item));
	}

	@Override
	public void prnItemList(Comparator<Department> comp) {
		if (comp == null) {
			Collections.sort(lists);
		} else {
			Collections.sort(lists, comp);
		}

		for (Department d : lists) {
			System.out.println(d);
		}
	}

	@Override
	public void loadFile() {
		ObjectInputStream ois = null;

		try {// 파일 불러오기
			ois = new ObjectInputStream(new BufferedInputStream(
					new FileInputStream(DepartmentDao.FILE_NAME)));
			lists = (ArrayList<Department>) ois.readObject();
		} catch (FileNotFoundException e) {// 처음 실행시켰을 경우(파일이 생성되지 않은 상태)
			try {
				new File(DepartmentDao.FILE_NAME).createNewFile();
				lists = new ArrayList<>();
			} catch (Exception e1) {
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (ois != null) {
				try {
					ois.close();
				} catch (Exception e) {
				}
			}
		}
	}

	@Override
	public void saveFile() {
		ObjectOutputStream oos = null;

		try {
			oos = new ObjectOutputStream(new BufferedOutputStream(
					new FileOutputStream(DepartmentDao.FILE_NAME)));
			oos.writeObject(lists);
			oos.flush();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if (oos != null) {
				try {
					oos.close();
				} catch (Exception e) {
				}
			}
		}
	}

}
